CN203570655U - Built-in type double mechanical seal structure of plastic pump - Google Patents
Built-in type double mechanical seal structure of plastic pump Download PDFInfo
- Publication number
- CN203570655U CN203570655U CN201320686009.3U CN201320686009U CN203570655U CN 203570655 U CN203570655 U CN 203570655U CN 201320686009 U CN201320686009 U CN 201320686009U CN 203570655 U CN203570655 U CN 203570655U
- Authority
- CN
- China
- Prior art keywords
- impeller
- spring
- fixed ring
- plastic
- mechanical seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000004033 plastic Substances 0.000 title claims abstract description 22
- 229920003023 plastic Polymers 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 230000003068 static effect Effects 0.000 claims description 5
- 231100000614 poison Toxicity 0.000 abstract description 3
- 230000007096 poisonous effect Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 210000004907 gland Anatomy 0.000 abstract 5
- 239000002360 explosive Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005603 centrifugal distortion Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a built-in type double mechanical seal structure of a plastic pump. The built-in type double mechanical seal structure comprises a plastic impeller, a movable ring, a fixed ring, a pump cover and a fixed ring gland. The impeller is the plastic impeller, a first movable ring body is installed on the back face of the impeller, a first fixed ring body matched with the first movable ring body is arranged inside the pump cover, the first fixed ring body is connected with the fixed ring gland through a first spring, the first spring is fixed and does not make contact with a medium, the pump cover is connected with the fixed ring gland, a spring is arranged on a shaft of the impeller, wherein the shaft is arranged on one side, away from the impeller, of the fixed ring gland, the spring base is provided with a second movable ring body, and the face, making contact with the fixed ring gland, of the second movable ring body of the spring base is provided with a matched second fixed ring body. The built-in type double mechanical seal structure has the advantages that the plastic pump is of the double mechanical seal structure, the cooling hydraulic pressure on the atmospheric side of the mechanical seal can be improved and is larger than the mechanical sealing cavity pressure, and poisonous, flammable and combustible media cannot be leaked.
Description
Technical field
The utility model relates to a kind of mechanical seal structure, and more specifically, it relates to a kind of plastic pump built-in type double-face mechanical sealing structure.
Background technique
The single external mounted single end face structure that is generally of mechanical seal structure of prior art plastic pump, when in the face of bad working environments, easily causes leakage, if medium is poisonous, inflammable and explosive medium, can produce serious potential safety hazard.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of rational in infrastructure, good airproof performance, and medium is difficult for leaking, safe and reliable plastic pump built-in type double-face mechanical sealing structure.
The purpose of this utility model is achieved through the following technical solutions: this plastic pump built-in type double-face mechanical sealing structure, the impeller that comprises plastics, rotating ring, stationary ring, pump cover and seal end plate, described impeller is plastic impeller, wherein the first rotating ring is arranged on the back side of impeller, the first stationary ring coordinating with the first rotating ring is located in pump cover, the first stationary ring connects seal end plate by the first spring, the first spring be static not with medium contact, described pump cover connects seal end plate, impeller is fixed with spring seat at seal end plate on the axle away from impeller one side, spring seat is provided with the second rotating ring, the second rotating ring of spring seat is provided with the surface of contact of seal end plate the second stationary ring coordinating.
As preferably: described the second stationary ring and the second rotating ring are by being located at the second spring compression on spring seat.
As preferably: be provided with impeller inserts in described impeller.
The beneficial effects of the utility model are: plastic pump adopts double-face mechanical sealing structure, can improve the coolant pressure of mechanical seal atmospheric side, are greater than machine sealing chamber pressure, guarantee that poisonous, inflammable and explosive medium does not leak outside.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Description of reference numerals: impeller inserts 1, impeller 2, the first rotating ring 3, the first stationary ring 4, pump cover 5, the first spring 6, seal end plate 7, the second stationary ring 8, the second rotating ring 9, the second spring 10, spring seat 11.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.Although the utility model is described in connection with preferred embodiment, should know, do not represent that the utility model is limited in described embodiment.On the contrary, the utility model is by alternative, modified model and the equivalent contained in the scope of the present utility model that can be included in attached claims restriction.
As shown in Figure 1, this plastic pump built-in type double-face mechanical sealing structure, comprises impeller 2, rotating ring 3, stationary ring 4, pump cover 5 and the seal end plate 7 of plastics, and described impeller 2 is plastic impeller, in described impeller 2, is provided with impeller inserts 1.Wherein the first rotating ring 3 is arranged on the back side of impeller 2, the first stationary ring 4 coordinating with the first rotating ring 3 is located in pump cover 5, the first stationary ring 4 connects seal end plate 7 by the first spring 6, the first spring 6 be static not with medium contact, described pump cover 5 connects seal end plate 7, impeller 2 is fixed with spring seat 11 on the axle away from impeller 2 one sides at seal end plate 7, spring seat 11 is provided with the second rotating ring 9, and the second rotating ring 9 of spring seat 11 is provided with the surface of contact of seal end plate 7 the second stationary ring 8 coordinating.Described the second stationary ring 8 and the second rotating ring 9 compress by the second spring 10 of being located on spring seat 11.
The first rotating ring 3 is arranged on plastic impeller 2 back sides, and the running accuracy of the first rotating ring 3 is easily guaranteed; The first spring 6 be static not with medium contact, the first spring 6 is static avoids centrifugal distortion and elastic force fluctuation, contact medium has not avoided spring by dielectric corrosion, thereby improves stability and the working life of mechanical seal; Built-in type structured media flows to and centrifugal force opposite direction, good airproof performance, and medium is difficult for leaking, safe and reliable.The second stationary ring 8, the second rotating ring 9, the second spring 10 and spring seat 11 form the sealing configuration of external mounted, and inside seal structure composition double mechanical seal, applicable to the situation of cooling flushing line 0.3～0.8MPa pressure.
Claims (3)
1. a plastic pump built-in type double-face mechanical sealing structure, it is characterized in that: the impeller (2) that comprises plastics, rotating ring (3), stationary ring (4), pump cover (5) and seal end plate (7), described impeller (2) is plastic impeller, wherein the first rotating ring (3) is arranged on the back side of impeller (2), the first stationary ring (4) coordinating with the first rotating ring (3) is located in pump cover (5), the first stationary ring (4) connects seal end plate (7) by the first spring (6), the first spring (6) be static not with medium contact, described pump cover (5) connects seal end plate (7), impeller (2) is fixed with spring seat (11) on the axle away from impeller (2) one sides at seal end plate (7), spring seat (11) is provided with the second rotating ring (9), second rotating ring (9) of spring seat (11) is provided with the surface of contact of seal end plate (7) the second stationary ring (8) coordinating.
2. plastic pump built-in type double-face mechanical sealing structure according to claim 1, is characterized in that: described the second stationary ring (8) and the second rotating ring (9) compress by the second spring (10) of being located on spring seat (11).
3. plastic pump built-in type double-face mechanical sealing structure according to claim 1, is characterized in that: in described impeller (2), be provided with impeller inserts (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320686009.3U CN203570655U (en) | 2013-10-31 | 2013-10-31 | Built-in type double mechanical seal structure of plastic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320686009.3U CN203570655U (en) | 2013-10-31 | 2013-10-31 | Built-in type double mechanical seal structure of plastic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570655U true CN203570655U (en) | 2014-04-30 |
Family
ID=50538388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320686009.3U Expired - Lifetime CN203570655U (en) | 2013-10-31 | 2013-10-31 | Built-in type double mechanical seal structure of plastic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203570655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573687A (en) * | 2013-10-31 | 2014-02-12 | 陈潜 | Built-in type double mechanical seal structure of plastic pump |
-
2013
- 2013-10-31 CN CN201320686009.3U patent/CN203570655U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573687A (en) * | 2013-10-31 | 2014-02-12 | 陈潜 | Built-in type double mechanical seal structure of plastic pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
|
| CX01 | Expiry of patent term |